Owens finished with 213 receiving yards, the second-highest total of his career, trailing only the 283 he had for the 49ers on Dec. 17, 2000, in Jerry Rice's final game with the team. The 213 yards were the second-most by a 49ers opponent; Don Beebe had 220 for Green Bay on Oct. 14, 1996.

"I told you guys that I've been successful everywhere I've been and I've been consistently involved in the offense,'' Owens said. "When I get my hands on the ball, things happen. It's not a mystery."

In the quiet of the 49ers' locker room, it was tough to tell what was the greater source of pain for the 49ers: making so little of those early chances, or letting Owens do so much?

Quarterback Shaun Hill grimaced when asked about the offense sputtering at the goal line. In six plays from inside the Dallas 5-yard line, the 49ers totaled minus-1 yard.

Hill had four incomplete passes; Frank Gore had one carry for no gain and another for a loss of 1.

Joe Nedney nailed kicks of 23 and 22 yards, but 6-0 should have been 14-0.

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"That makes a huge difference,'' Hill said of the momentum shift. "It changes the game dramatically."

The Cowboys, in contrast, made it look easy. On the drive after the 49ers' second field goal, Dallas quarterback Tony Romo escaped pressure and launched the ball toward Owens.

Owens caught the ball in stride, and when Nate Clements tried to tackle him, Owens simply continued into the end zone to complete the 75-yard play. It was Owen's longest play of the season and it gave Dallas a 7-6 lead with 13:54 to play in the second quarter.

"I can play,'' Owens said.

Unlike previous opponents, who slowed Owens with "press" coverage, the 49ers felt comfortable playing about 10 yards off the line. This did not prove wise. Owens hadn't had a 100-yard game since last Nov. 29. Against Clements, he had two 100-yard games in one day.

Owens averaged a staggering 30.4 yards on seven catches. He hadn't totaled more than 38 yards in a game since Oct. 5. Opponents were jamming Owens at the line of scrimmage and bringing a safety over the top.

Why didn't the 49ers do that?

Singletary said their game plan called for a mix of coverage, playing some press and some off. He acknowledged that Clements surrendered some big plays but defended the high-priced cornerback overall.

"I would say that Nate can cover (Owens) all over the field,'' he said.

After Owens' long touchdown catch, things unraveled. The 49ers started their next drive at the 16. But consecutive sacks of Hill forced the 49ers to punt out of their end zone. Cowboys linebacker Carlos Polk swooped in to block Andy Lee's punt for a safety, giving Dallas a 9-6 lead.

Hill said the 49ers' offense should have given Lee a break by at least getting a first down. But such movement was a struggle, at least when the score was close, because the Cowboys did a terrific job of bottling up Gore.

The 49ers' best offensive player had just 26 yards in 14 carries.

"I think we did a great job of making them one-dimensional,'' Dallas linebacker Zach Thomas said. "Singletary wants to get the running game going, and they never could."

Hill's third start of the season resulted in his first career 300-yard game (303, officially) and a 100.9 quarterback rating.

But Hill also played a role in two painful turnovers. He and center Eric Heitmann misfired on a snap late in the second quarter and Dallas recovered the fumble at the 49ers' 19. That set up a 1-yard touchdown catch by Martellus Bennett and a 22-6 lead.

In the third quarter, after 49ers linebacker Manny Lawson recovered a loose ball at the Cowboys' 17, Hill immediately turned the ball back by throwing an interception.

Singletary said: "I don't know exactly what happened on it. I just know it was a bad throw."

The mistake was one of the many lapses Singletary singled out when it was over. The 49ers are playing with heart, Singletary said. Now they just need their brains to catch up.

"We have to play smarter than we played today, and that's why we lost,'' he said. "With all the things that Dallas can do and the talent that they have on their team, you can't afford not to play smart."